yading@10: /* yading@10: * XWD image format yading@10: * yading@10: * Copyright (c) 2012 Paul B Mahol yading@10: * yading@10: * This file is part of FFmpeg. yading@10: * yading@10: * FFmpeg is free software; you can redistribute it and/or yading@10: * modify it under the terms of the GNU Lesser General Public yading@10: * License as published by the Free Software Foundation; either yading@10: * version 2.1 of the License, or (at your option) any later version. yading@10: * yading@10: * FFmpeg is distributed in the hope that it will be useful, yading@10: * but WITHOUT ANY WARRANTY; without even the implied warranty of yading@10: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU yading@10: * Lesser General Public License for more details. yading@10: * yading@10: * You should have received a copy of the GNU Lesser General Public yading@10: * License along with FFmpeg; if not, write to the Free Software yading@10: * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA yading@10: */ yading@10: yading@10: #include "libavutil/intreadwrite.h" yading@10: #include "libavutil/pixdesc.h" yading@10: #include "avcodec.h" yading@10: #include "bytestream.h" yading@10: #include "internal.h" yading@10: #include "xwd.h" yading@10: yading@10: #define WINDOW_NAME "lavcxwdenc" yading@10: #define WINDOW_NAME_SIZE 11 yading@10: yading@10: static int xwd_encode_frame(AVCodecContext *avctx, AVPacket *pkt, yading@10: const AVFrame *pict, int *got_packet) yading@10: { yading@10: enum AVPixelFormat pix_fmt = avctx->pix_fmt; yading@10: const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); yading@10: uint32_t pixdepth, bpp, bpad, ncolors = 0, lsize, vclass, be = 0; yading@10: uint32_t rgb[3] = { 0 }, bitorder = 0; yading@10: uint32_t header_size; yading@10: int i, out_size, ret; yading@10: uint8_t *ptr, *buf; yading@10: AVFrame * const p = (AVFrame *)pict; yading@10: yading@10: pixdepth = av_get_bits_per_pixel(desc); yading@10: if (desc->flags & PIX_FMT_BE) yading@10: be = 1; yading@10: switch (pix_fmt) { yading@10: case AV_PIX_FMT_ARGB: yading@10: case AV_PIX_FMT_BGRA: yading@10: case AV_PIX_FMT_RGBA: yading@10: case AV_PIX_FMT_ABGR: yading@10: if (pix_fmt == AV_PIX_FMT_ARGB || yading@10: pix_fmt == AV_PIX_FMT_ABGR) yading@10: be = 1; yading@10: if (pix_fmt == AV_PIX_FMT_ABGR || yading@10: pix_fmt == AV_PIX_FMT_RGBA) { yading@10: rgb[0] = 0xFF; yading@10: rgb[1] = 0xFF00; yading@10: rgb[2] = 0xFF0000; yading@10: } else { yading@10: rgb[0] = 0xFF0000; yading@10: rgb[1] = 0xFF00; yading@10: rgb[2] = 0xFF; yading@10: } yading@10: bpp = 32; yading@10: pixdepth = 24; yading@10: vclass = XWD_TRUE_COLOR; yading@10: bpad = 32; yading@10: break; yading@10: case AV_PIX_FMT_BGR24: yading@10: case AV_PIX_FMT_RGB24: yading@10: if (pix_fmt == AV_PIX_FMT_RGB24) yading@10: be = 1; yading@10: bpp = 24; yading@10: vclass = XWD_TRUE_COLOR; yading@10: bpad = 32; yading@10: rgb[0] = 0xFF0000; yading@10: rgb[1] = 0xFF00; yading@10: rgb[2] = 0xFF; yading@10: break; yading@10: case AV_PIX_FMT_RGB565LE: yading@10: case AV_PIX_FMT_RGB565BE: yading@10: case AV_PIX_FMT_BGR565LE: yading@10: case AV_PIX_FMT_BGR565BE: yading@10: if (pix_fmt == AV_PIX_FMT_BGR565LE || yading@10: pix_fmt == AV_PIX_FMT_BGR565BE) { yading@10: rgb[0] = 0x1F; yading@10: rgb[1] = 0x7E0; yading@10: rgb[2] = 0xF800; yading@10: } else { yading@10: rgb[0] = 0xF800; yading@10: rgb[1] = 0x7E0; yading@10: rgb[2] = 0x1F; yading@10: } yading@10: bpp = 16; yading@10: vclass = XWD_TRUE_COLOR; yading@10: bpad = 16; yading@10: break; yading@10: case AV_PIX_FMT_RGB555LE: yading@10: case AV_PIX_FMT_RGB555BE: yading@10: case AV_PIX_FMT_BGR555LE: yading@10: case AV_PIX_FMT_BGR555BE: yading@10: if (pix_fmt == AV_PIX_FMT_BGR555LE || yading@10: pix_fmt == AV_PIX_FMT_BGR555BE) { yading@10: rgb[0] = 0x1F; yading@10: rgb[1] = 0x3E0; yading@10: rgb[2] = 0x7C00; yading@10: } else { yading@10: rgb[0] = 0x7C00; yading@10: rgb[1] = 0x3E0; yading@10: rgb[2] = 0x1F; yading@10: } yading@10: bpp = 16; yading@10: vclass = XWD_TRUE_COLOR; yading@10: bpad = 16; yading@10: break; yading@10: case AV_PIX_FMT_RGB8: yading@10: case AV_PIX_FMT_BGR8: yading@10: case AV_PIX_FMT_RGB4_BYTE: yading@10: case AV_PIX_FMT_BGR4_BYTE: yading@10: case AV_PIX_FMT_PAL8: yading@10: bpp = 8; yading@10: vclass = XWD_PSEUDO_COLOR; yading@10: bpad = 8; yading@10: ncolors = 256; yading@10: break; yading@10: case AV_PIX_FMT_GRAY8: yading@10: bpp = 8; yading@10: bpad = 8; yading@10: vclass = XWD_STATIC_GRAY; yading@10: break; yading@10: case AV_PIX_FMT_MONOWHITE: yading@10: be = 1; yading@10: bitorder = 1; yading@10: bpp = 1; yading@10: bpad = 8; yading@10: vclass = XWD_STATIC_GRAY; yading@10: break; yading@10: default: yading@10: av_log(avctx, AV_LOG_INFO, "unsupported pixel format\n"); yading@10: return AVERROR(EINVAL); yading@10: } yading@10: yading@10: lsize = FFALIGN(bpp * avctx->width, bpad) / 8; yading@10: header_size = XWD_HEADER_SIZE + WINDOW_NAME_SIZE; yading@10: out_size = header_size + ncolors * XWD_CMAP_SIZE + avctx->height * lsize; yading@10: yading@10: if ((ret = ff_alloc_packet2(avctx, pkt, out_size)) < 0) yading@10: return ret; yading@10: buf = pkt->data; yading@10: yading@10: p->key_frame = 1; yading@10: p->pict_type = AV_PICTURE_TYPE_I; yading@10: yading@10: bytestream_put_be32(&buf, header_size); yading@10: bytestream_put_be32(&buf, XWD_VERSION); // file version yading@10: bytestream_put_be32(&buf, XWD_Z_PIXMAP); // pixmap format yading@10: bytestream_put_be32(&buf, pixdepth); // pixmap depth in pixels yading@10: bytestream_put_be32(&buf, avctx->width); // pixmap width in pixels yading@10: bytestream_put_be32(&buf, avctx->height); // pixmap height in pixels yading@10: bytestream_put_be32(&buf, 0); // bitmap x offset yading@10: bytestream_put_be32(&buf, be); // byte order yading@10: bytestream_put_be32(&buf, 32); // bitmap unit yading@10: bytestream_put_be32(&buf, bitorder); // bit-order of image data yading@10: bytestream_put_be32(&buf, bpad); // bitmap scan-line pad in bits yading@10: bytestream_put_be32(&buf, bpp); // bits per pixel yading@10: bytestream_put_be32(&buf, lsize); // bytes per scan-line yading@10: bytestream_put_be32(&buf, vclass); // visual class yading@10: bytestream_put_be32(&buf, rgb[0]); // red mask yading@10: bytestream_put_be32(&buf, rgb[1]); // green mask yading@10: bytestream_put_be32(&buf, rgb[2]); // blue mask yading@10: bytestream_put_be32(&buf, 8); // size of each bitmask in bits yading@10: bytestream_put_be32(&buf, ncolors); // number of colors yading@10: bytestream_put_be32(&buf, ncolors); // number of entries in color map yading@10: bytestream_put_be32(&buf, avctx->width); // window width yading@10: bytestream_put_be32(&buf, avctx->height); // window height yading@10: bytestream_put_be32(&buf, 0); // window upper left X coordinate yading@10: bytestream_put_be32(&buf, 0); // window upper left Y coordinate yading@10: bytestream_put_be32(&buf, 0); // window border width yading@10: bytestream_put_buffer(&buf, WINDOW_NAME, WINDOW_NAME_SIZE); yading@10: yading@10: for (i = 0; i < ncolors; i++) { yading@10: uint32_t val; yading@10: uint8_t red, green, blue; yading@10: yading@10: val = AV_RN32A(p->data[1] + i * 4); yading@10: red = (val >> 16) & 0xFF; yading@10: green = (val >> 8) & 0xFF; yading@10: blue = val & 0xFF; yading@10: yading@10: bytestream_put_be32(&buf, i); // colormap entry number yading@10: bytestream_put_be16(&buf, red << 8); yading@10: bytestream_put_be16(&buf, green << 8); yading@10: bytestream_put_be16(&buf, blue << 8); yading@10: bytestream_put_byte(&buf, 0x7); // bitmask flag yading@10: bytestream_put_byte(&buf, 0); // padding yading@10: } yading@10: yading@10: ptr = p->data[0]; yading@10: for (i = 0; i < avctx->height; i++) { yading@10: bytestream_put_buffer(&buf, ptr, lsize); yading@10: ptr += p->linesize[0]; yading@10: } yading@10: yading@10: pkt->flags |= AV_PKT_FLAG_KEY; yading@10: *got_packet = 1; yading@10: return 0; yading@10: } yading@10: yading@10: AVCodec ff_xwd_encoder = { yading@10: .name = "xwd", yading@10: .type = AVMEDIA_TYPE_VIDEO, yading@10: .id = AV_CODEC_ID_XWD, yading@10: .encode2 = xwd_encode_frame, yading@10: .pix_fmts = (const enum AVPixelFormat[]) { AV_PIX_FMT_BGRA, yading@10: AV_PIX_FMT_RGBA, yading@10: AV_PIX_FMT_ARGB, yading@10: AV_PIX_FMT_ABGR, yading@10: AV_PIX_FMT_RGB24, yading@10: AV_PIX_FMT_BGR24, yading@10: AV_PIX_FMT_RGB565BE, yading@10: AV_PIX_FMT_RGB565LE, yading@10: AV_PIX_FMT_BGR565BE, yading@10: AV_PIX_FMT_BGR565LE, yading@10: AV_PIX_FMT_RGB555BE, yading@10: AV_PIX_FMT_RGB555LE, yading@10: AV_PIX_FMT_BGR555BE, yading@10: AV_PIX_FMT_BGR555LE, yading@10: AV_PIX_FMT_RGB8, yading@10: AV_PIX_FMT_BGR8, yading@10: AV_PIX_FMT_RGB4_BYTE, yading@10: AV_PIX_FMT_BGR4_BYTE, yading@10: AV_PIX_FMT_PAL8, yading@10: AV_PIX_FMT_GRAY8, yading@10: AV_PIX_FMT_MONOWHITE, yading@10: AV_PIX_FMT_NONE }, yading@10: .long_name = NULL_IF_CONFIG_SMALL("XWD (X Window Dump) image"), yading@10: };